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Finding the Fourth Proportional to 65,295.94, 90,152.36 and 40,803.93

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Solution

The fourth proportional to 65,295.94, 90,152.36 and 40,803.93 is: 56,336.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,295.94 : 90,152.36 = 40,803.93 : x
  2. Step 2: Convert to fraction form
    65,295.94/90,152.36 = 40,803.93/x
  3. Step 3: Cross multiply
    65,295.94x = 90,152.36 × 40,803.93
  4. Step 4: Simplify right side
    65,295.94x = 3,678,570,586.77
  5. Step 5: Solve for x
    x = 3,678,570,586.77/65,295.94
  6. Step 6: Final answer
    x = 56,336.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.